CHAIR FOR EASY-SITTING AND EASY-RISING MOTIONS
A chair for easy-sitting and easy-rising motions includes: a seat plate; a base that contacts the ground under the seat plate and supports a structure of the chair; an extensible support unit whose upper end portion is pivotably fixed to a rear portion of the seat plate and lower end portion is pivotably fixed to a front portion of the base; a second support rod whose upper end portion is pivotably fixed to the front portion of the seat plate and lower end portion is pivotably fixed to the rear portion of the base; and a guide rod that guides pivotal movements of the extensible support unit and the second support rod. When a user's weight is applied to the seat plate, since the seat plate is slowly lowered by changing its angle, the user may easily and safely sit on the chair, and the user may also easily rise from the chair.
The present invention relates to a chair for easy-sitting and easy-rising motions, and more particularly, to a chair which, when a user's weight is applied to a seat plate, helps the user to safely sit on the chair by allowing a shock absorber connected to the seat plate to absorb an impact and the seat plate to be slowly and smoothly lowered by changing its angle as the user moves, and when the user sitting on the chair tries to rise by shifting his/her weight forward or takes an action to rise from the chair, helps the user to safely rise from the chair by allowing the seat plate to be raised by changing its angle due to an elastic force of a spring mounted on the shock absorber.
BACKGROUND ARTThe number of the old in developed countries such as the United States, Japan, and Europe as well as Korea has increased sharply in recent years as medical technologies have been developed and interest in health has increased. Accordingly, it is further important to develop appropriate devices and household items which may help the old not only to prevent and treat their diseases but also to live a life more conveniently and safely. For example, since it is very difficult for elderly people who have bad waists, hip joints, or knees to sit on and rise from the floor of a room, they often need to use chairs. However, when conventional chairs are used, they may flop down into the conventional chairs because they may not appropriately use their joints, thereby putting stress on their joints. Also, when they rise from the conventional chairs, they often need to hold something because they are not strong enough to rise by themselves. Accordingly, they have much difficulty in daily life.
Also, in modern society, the number of patients whose spines, waists, or leg joints are injured in various industrial accidents or traffic accidents has increased. When the patients whose spines, waists, or leg joints are injured abruptly flop down into chairs or gather their strength in order to rise from chairs, it may negatively affect the patients' bodies.
Accordingly, there are demands for chairs which may help the old, the weak or patients whose waists, leg joints, etc. are injured to safely and easily sit on and rise from chairs without much difficulty.
DETAILED DESCRIPTION OF THE INVENTION Technical ProblemThe present invention provides a chair in which a seat plate on which a user's hips may be placed may vertically move by changing its angle, and particularly, when the user's weight is applied to the seat plate, a shock absorber that supports the seat plate absorbs an impact and the seat plate is slowly and smoothly lowered by changing its angle, to help the user to easily and safely sit on the chair, and when the user tries to rise and slightly shifts his/her weight forward, the seat plate is raised by changing its angle due to an elastic force of a spring mounted on the shock absorber, to help the user to easily and safely rise from the chair.
Technical SolutionAccording to an aspect of the present invention, there is provided a chair for easy-sitting and easy-rising motions, the chair including: a seat plate 2 on which a user's hips may be placed; a base 3 that is disposed under the seat plate 2 to contact the ground and supports a structure of the chair; an extensible support unit 600 whose upper end portion is pivotably fixed to a rear portion of the seat plate 2 and whose lower end portion is pivotably fixed to a front portion of the base 3; a second support rod 12 whose upper end portion is pivotably fixed to a front portion of the seat plate 2 and lower end portion is pivotably fixed to a rear portion of the base; and a guide rod 13 whose lower end portion is fixed to the base 3, and that is disposed between the extensible support unit 600 and the second support rod 12 and guides pivotal movements of the extensible support unit 600 and the second support rod.
According to another aspect of the present invention, there is provided a chair for easy-sitting and easy-rising motions, the chair including: a main seat plate 2a on which a user's hips may be placed; an auxiliary seat plate 2b that is disposed in front of the main seat plate 2a and is connected via a connection member 2c to the main seat plate 2a; a base 3 that is disposed under the main seat plate 2a and the auxiliary seat plate 2b to contact the ground and supports a structure of the chair; an extensible support unit 601 whose upper end portion is fixed to a bottom surface of the main seat plate 2a and lower end portion is fixed to the base 3 and an auxiliary seat plate support connection bar 303 whose one end is pivotably fixed to the auxiliary seat plate 2b and whose other end is pivotably fixed to the extensible support unit 601.
According to another aspect of the present invention, there is provided a chair for easy-sitting and easy-rising motions, the chair including: a seat plate 2 on which a user's hips may be placed; an extensible support unit 602 whose upper end is pivotably fixed to a rear portion of the seat plate 2 and lower end portion contacts the ground under a front portion of the seat plate 2; and a second support rod 12 whose upper end portion is pivotably fixed to the front portion of the seat plate 2 and lower end portion contacts the ground under the rear portion of the seat plate 2, wherein the extensible support unit 602 includes a first support rod 11 whose lower end portion contacts the ground, and a shock absorber 15 whose lower end portion is connected to the first support rod 11 and upper end portion is connected to the rear portion of the seat plate 2, wherein the first support rod 11 and the second support rod 12 which cross each other in an X shape are pivotably coupled to each other by using a rod coupling pin 400.
In order to achieve the objectives, some embodiments in which a seat plate is vertically smoothly moved by changing its angle have been suggested herein. However, since there may be various other embodiments other than the embodiments, the scope of the present invention is not limited to the attached drawings and descriptions thereof.
Also, in the embodiments of the present invention, a shock absorber and/or a spring for lowering/raising a seat plate of a chair may be replaced by a motor cylinder, a hydraulic cylinder, or a pneumatic cylinder which is driven by external power. Accordingly, not only a chair in which a seat plate is lowered/raised by changing its angle when a user's weight is applied or removed but also a chair in which a seat plate is forced to be lowered/raised by changing its angle by a mechanical device driven by external power such as a motor cylinder are included in the scope of the present invention.
Advantageous EffectsSince a chair for easy-sitting and easy-rising motions according to the present invention may help the old, the weak, or patients who have bad waists, leg joints, etc. to easily and safely sit on and rise from the chair, the chair helps them to live a more comfortable life. In particular, since the chair may be applied to a variety of products, for example, a toilet seat as well as a general chair, the chair may greatly improve the welfare of the old, the weak, patients, and the disabled in daily life.
According the best mode of the present invention, a chair for easy-sitting and easy-rising motions includes: a seat plate 2 on which a user's hips may be placed; a base 3 that contacts the ground under the seat plate 2 and supports a structure of the chair; an extensible support unit 600 whose upper end portion is pivotably fixed to a rear portion of the seat plate 2 and lower end portion is pivotably fixed to a front portion of the base 3; a second support rod 12 whose upper end portion is pivotably fixed to a front portion of the seat plate 2 and lower end portion is pivotably fixed to a rear portion of the base 3; and a guide rod 13 whose lower end portion is fixed to the base 3, and that is disposed between the extensible support unit 600 and the second support rod 12 and guides pivotal movements of the extensible support unit 600 and the second support rod 12.
MODE OF THE INVENTIONThe present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.
The first support rod 11 and the second support rod 12 are pivotably coupled to a base 3 that contacts the ground under the seat plate 2. That is, an upper end portion of the first support rod 11 is coupled to the shock absorber 15, and a lower end portion of the first support rod 11 is pivotably coupled to a first lower connection hinge 31 that is disposed on a front portion of the base 3. An upper end portion of the second support rod 12 is pivotably coupled to a first upper connection hinge 21 that is provided on a bottom surface of a front portion of the seat plate 2, and a lower end portion of the second support rod 12 is pivotably coupled to a second lower connection hinge 32 that is disposed on a rear portion of the base 3. An extensible piston rod 16 of the shock absorber 15 is pivotably coupled to a second upper connection hinge 22 that is provided on a rear portion of the seat plate 2.
As shown in
The first support rod 11 and the second support rod 12 are provided to cross each other in an X shape, and long grooves 11a and 12a are partially formed in the first support rod 11 and the second support rod 12 in longitudinal directions of the first support rod 11 and the second support rod 12, respectively. A guide long groove 13a is also partially formed in the guide rod 13 in a longitudinal direction of a guide rod 13 that is disposed between the first support rod 11 and the second support rod 12. A support rod connection pin 17 is inserted into long grooves, that is, the first movement groove 11a, the second movement groove 12a, and the guide long groove 13a, respectively formed in the first support rod 11, the second support rod 12, and the guide rod 13, such that positions of the first support rod 11, the second support rod 12, and the guide rod 13 may be changed. Accordingly, as shown in
Since a lower end portion of the guide rod 13 is fixed to the base 3 and a fixing portion 33 fixes the guide rod 13 on the base, the guide rod 13 may be firmly held at its position irrespective of positions of the first support rod 11 (that is, the extensible support unit 600) and the second support rod 12.
Referring to
However, when the user P tries to sit on the seat plate 2 by putting his/her hips on the seat plate 2 to apply his/her weight to the seat plate 2, the shock absorber 15 of the extensible support unit 600 begins to slowly compress. That is, the piston rod 16 is inserted into the shock absorber 15 to reduce an overall length of the extensible support unit 600, and the first support rod 11 rotates clockwise about the first lower connection hinge 31 in
The second support rod 12 crossing the first support rod 11 rotates counterclockwise about the second lower connection hinge 32 in
According to the chair 1 of the present embodiment, even when the user P flops down into the chair 1, since the shock absorber 15 that supports the seat plate 2 slowly compresses to absorb an impact, the seat plate 2 which is inclined gets slowly lowered to be horizontal. That is, the chair 1 has an advantage in that since the seat plate 2 is slightly lowered by slowly changing its angle, the user P may comfortably sit on the chair 1. Accordingly, even the old, the weak, and the disabled who have bad waists and leg joints may safely sit on the chair 1 by applying their weights to the chair 1 without using others' help or without holding the chair 1 with hands.
As described above, the long grooves 11a, 12a, and 13a respectively formed in the first support rod 11, the second support rod 12, and the guide rod 13 guide positions of the first support rod 11, the second support rod 12, and the guide rod 13, and secure a highest position (see
The chair 1 helps people who have bad waits or leg joints not only to easily sit on the chair 1, but also to easily rise from the chair 1 when they try to rise by slightly shifting their weights forward or by slightly raising their hips by extending the shock absorber 15 due to an elastic force of the spring 158 (see
As shown in
Assuming that people who have bad waists or leg joints try to rise, when a seat plate of a chair slightly pushes their hips upward, they may rise from the chair much easier. Considering this, since the chair 1 elastically supports the seat plate 2 by using the shock absorber 15 and the spring which are coupled to each other, when a weight is partially removed, the shock absorber 15 is designed to raise the seat plate 2 due to an elastic force of the spring. As a result, the user P may much more easily and safely rise from the chair 1 than from a conventional chair.
A structure and a specification of the shock absorber 15 coupled to the first support rod 11 may vary according to specific cases. Also, since a variety of shock absorbers are currently commercially available, the shock absorbers may be appropriately used. Since the shock absorber 15 is one example of various shock absorbers applicable to the chair 1, it will be understood that the scope of the present invention is not limited to the following explanations and drawings of the shock absorber 15.
Referring to
A working fluid, that is, oil 157, fills in all inner spaces of the outer housing 155. Although some shock absorbers are filled with gas (e.g., nitrogen), a case where oil is used as a working fluid will be exemplarily explained in the present embodiment. A plurality of first orifices 151 are formed in a lower end portion of the inner cylinder 160, and thus the working fluid (oil) 157 may flow into or out of the inner cylinder 160. A plurality of third orifices 153 are formed in an upper end portion of the inner cylinder 160 and second orifices 152 are formed between the inner cylinder 160 and the outer housing 155 to be adjacent to the third orifices 153, and thus the oil 157 may flow through the second orifices 152 and the third orifices 153.
A piston head 16a of the piston rod 16 located in the inner cylinder 160 is always provided with an elastic force outside the shock absorber 15 due to the spring 158. In order for the shock absorber 15 to compress, the oil 157 in the first inner space 161 of the inner cylinder 160 has to flow to an outer space 163 through the first orifices 151 and the oil 157 in the outer space 163 has to flow into the second inner space 162 of the inner cylinder 160 through the second orifices 152 and the third orifices 153. However, since the first through third orifices 151, 152, and 153 are formed to have small sizes, even when the oil 157 is pressurized due to a movement of the piston rod 16, the oil 157 may not flow at one time through the first through third orifices 151, 152, and 153, thereby making the shock absorber 15 slowly compress according to a speed at which the oil 157 flows (see
On the contrary, when an external load applied to the shock absorber 15 is removed and the shock absorber 15 extends due to an elastic force of the spring 158, the oil 157 in the second inner space 162 of the inner cylinder 160 flows to the outer space 163 through the third orifices 153 and the second orifices 152, and the oil 157 in the outer space 163 flows into the first inner space 161 of the inner cylinder 160 through the first orifices 151. Even in this case, since the piston rod 16 moves outward according to a speed at which the oil 157 passes through the narrow orifices 151, 152, and 153, the shock absorber 15 also extends slowly (see
As such, since the shock absorber 15 slowly operates in a direction in which a force is applied, the seat plate 2 of the chair 1 is slowly lowered or raised.
The lower cover 155a of the shock absorber 15 may be coupled to the first support rod 11 by using welding or the like. Reference numeral 11b in
Although the spring 158 is provided in the shock absorber 15 in
Although the seat plate 2 of the chair 1 according to the present invention may vertically move, the seat plate 2 may need to be fixed (for example, to a state of
In
Accordingly, the chair 1 may adjust a response speed of the chair 1 or lock out the shock absorber 15b by manipulating the adjustment knob 170 provided on the shock absorber 15b with a hand.
Although the adjustment block 171 is provided adjacent to the second orifices 152 and the third orifices 153 of the shock absorber 15b in
The main seat plate 2a and the auxiliary seat plate 2b are connected to each other by a connection member 2c such that positions of the main seat plate 2a and the auxiliary seat plate 2b and a distance between the main seat plate 2a and the auxiliary seat plate 2b may be slightly changed, and an upper end portion of the extensible support unit 601 is fixed to a bottom surface of the main seat plate 2a and a lower end portion of the extensible support unit 601 is fixed to the base 3. Since the other end of the auxiliary seat plate 2b is connected to an auxiliary plate support connection bar 303 that is pivotably fixed to the extensible support unit 601, the auxiliary seat plate 2b may pivot by a predetermined angle about a hinge connection unit 302.
Referring to
When the user P tries to sit on the main seat plate 2a and the auxiliary seat plate 2b by applying his/her weight to the main seat plate 2a and the auxiliary seat plate 2b, the spindle 200 overcomes an elastic force of the spring 203 and is inserted into the outer container 300. In this case, since the shock absorber 310 slowly compresses by absorbing an impact, the spindle 200 is slowly inserted into the outer container 300.
Also, as shown in
As shown in
Referring to
In
Although the chair 1b of
Referring to
When the first support rod 11 and the second support rod 12 are coupled to each other by crossing each other in an X shape, in order not to change positions of the rods 11 and 12 like the rods 12a and 13b (see
Reference numeral 32a in
Except that positions of the first support rod 11 and the second support rod 12 are fixed to one position by the rod coupling pin 400 in
Unlike in
In
Portions of the first support rod 401 and the second support rod 402 which cross each other are pivotably coupled to each other by the rod coupling pin 400. A shock absorber 450 is provided between the third upper connection hinge 23 and the rod coupling pin 400. When the user P sits on the chair 1d, the shock absorber 450 absorbs an impact and slowly compresses, and thus the seat plate 2 is lowered to change from being inclined to being horizontal. When the user P rises from the chair 1d, a spring which is not shown but is provided around a piston rod 451 of the shock absorber 450 exerts an elastic force to slowly extend, and thus the seat plate 2 is slowly raised to change from being horizontal to being inclined forward.
As such, since the third upper connection hinge 23 applies a force to the shock absorber 450 and is also provided with a force from the shock absorber 450, the third upper connection hinge 23 may function as a point where a force needed to lower and raise the chair 1d is applied.
The third upper connection hinge 23 is provided at a point between a front end and a rear end, instead of a rear end portion, of the seat plate 2. Although the third upper connection hinge 23 may be located at any position between the front end and the rear end of the seat plate 2, in order to smoothly raise and lower the chair 1d and reduce the amount of vertical movement of the seat plate 2 and the amount of movement of the first and second support rods 401 and 402, the third upper connection hinge 23 may be located closer to the front end or the rear end of the seat plate 2. That is, in
Referring to
When the seat plate 2 of the chair 1d is raised to the maximum, the first upper connection hinge 21 provided on a front end portion of the seat plate 2 is located at a position Y1 (see
In
A first shock absorber 510 and a second shock absorber 520 are coupled to the basic support rod 500. The first shock absorber 510 is disposed between the base 3 and the basic support rod 500, and an upper end portion of the first shock absorber 510 is pivotably fixed by a first rod coupling pin 531 at a first coupling point 531a on the basic support rod 500 and a lower end portion of the first shock absorber 510 is pivotably fixed to the first lower connection hinge 31 provided on the base 3.
The second shock absorber 520 is provided between the seat plate 2 of the chair 1f and the basic support rod 500, and an upper end portion of the second shock absorber 520 is pivotably fixed to the second upper connection hinge 22 provided on the rear portion of the seat plate 2 of the chair 1f and a lower end portion of the second shock absorber 520 is pivotably fixed by a second rod coupling pin 532 at a second coupling point 532a on the basic support rod 500.
Even when the seat plate 2 of the chair 1f is raised or lowered, positions of portions contacting the ground under the seat plate 2 are not changed due to the base 3. Only the seat plate 2 is lowered by moving slightly forward and is raised. That is, when the seat plate 2 of the chair 1f is raised to the maximum, the first upper connection hinge 21 of the seat plate 2 of the chair 1f is located at a position Y3 (see
Although two shock absorbers 510 and 520, that is, the first coupling point 531a and the second coupling point 532a, are separately disposed on the basic support rod 500 in
In addition, although a fixed position (that is, the first coupling point 531a) of the first shock absorber 510 is lower in position than a fixed position (that is, the second coupling point 532a) of the second shock absorber 520 on the basic support rod 500 in
When compared with the chair 1a of
Referring to
Referring to
When the user P sits on the chair 1h of
When compared with the chair 1a of
After the user P completely sits on the chair 1j by applying his/her weight, the spring 203 and the shock absorber 310 are pressurized due to the weight. Since the center of gravity of the chair 1j is completely located at a rear side, the front end portion 3c of the base 3 is inclined upward (see
The shock absorbers 15, 450, 451a, 460, 510, and 520 may be the same as the shock absorbers 15, 15a, and 15b of
Although a spring is not mounted outside a shock absorber in
In
Structures and operations have been described in detail with reference to embodiments of the present invention. Since a chair for easy-sitting and easy-rising motions of the present invention may help the old, the weak, the disabled, and patients who have bad waists, hips, or knees to easily sit on and rise from the chair without putting stress on the waists, the hips, or the knees, the chair is expected to improve the welfare of the old, the weak, the disabled, and patients in daily life.
In particular, when the chair for easy-sitting and easy-rising motions according to the present invention is applied to a toilet seat as well as a general chair, the chair is expected to greatly help patients, the old, the weak, and the disabled to more easily and safely use a toilet. It is very difficult for people who are physically challenged due to physical disabilities or various diseases to sit on and rise from a toilet seat by themselves and it is not easy for them to get others' help in toilets. When the chair for easy-sitting and easy-rising motions according to the present invention is applied to a toilet seat, since a user does not flop down into the toilet seat, he/she may easily and safely sit on the toilet seat without putting stress on joints. Even when the user rises from the chair, since he/she may rise from the chair more easily than from a conventional toilet seat, the disabled, the old, the weak, or patients may use the toilet seat without others' help in daily life.
Accordingly, since the chair for easy-sitting and easy-rising motions of the present invention helps physically challenged people to more comfortably enjoy their life, the chair is expected to greatly improve the welfare of the old, the weak, patients, and the disabled in daily life in the future.
Claims
1. A chair for easy-sitting and easy-rising motions which, when a user's weight is applied to a seat plate, may help the user to easily and safely sit on the chair by allowing the seat plate to be slowly and smoothly lowered by changing its angle as angles of thighs and hips of the user vary by using a shock absorber and a spring or a motor cylinder, or when the user tries to rise from the chair, may help the user to easily and safely rise from the chair by allowing the seat plate to be raised by changing its angle.
2. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a seat plate 2 on which a user's hips may be placed;
- a base 3 that is disposed under the seat plate 2 to contact the ground and supports a structure of the chair;
- an extensible support unit 600 whose upper end portion is pivotably fixed to a rear portion of the seat plate 2 and whose lower end portion is pivotably fixed to a front portion of the base 3;
- a second support rod 12 whose upper end portion is pivotably fixed to a front portion of the seat plate 2 and lower end portion is pivotably fixed to a rear portion of the base 3; and
- a guide rod 13 whose lower end portion is fixed to the base 3, and that is disposed between the extensible support unit 600 and the second support rod 12 and guides pivotal movements of the extensible support unit 600 and the second support rod.
3. The chair of claim 2, wherein the extensible support unit 600 comprises a first support rod 11 whose lower end portion is pivotably fixed to the front portion of the base 3, and a shock absorber 15 whose one end is coupled to an upper end portion of the first support rod 11,
- wherein the other end of the shock absorber 15 is pivotably fixed to the rear portion of the seat plate 2.
4. The chair of claim 2, wherein the extensible support unit 600 comprises a first support rod 11 whose lower end portion is pivotably fixed to the front portion of the base 3, and a motor cylinder whose one end is coupled to an upper end portion of the first support rod 11,
- wherein the other end of the motor cylinder is pivotably fixed to the rear portion of the seat plate 2.
5. The chair of claim 3, wherein a first movement groove 11a is partially formed as a long groove in the first support rod 11 in a longitudinal direction of the first support rod 11, a second movement groove 12a is partially formed as a long groove in the second support rod 12 in a longitudinal direction of the second support rod 12, and a guide long groove 13a is partially formed in the guide rod 13 in a longitudinal direction of the guide rod 13,
- wherein a support rod connection pin 17 passes through the first movement groove 11a, the second movement groove 12a, and the guide long groove 13a, such that the first support rod 11, the second support rod 12 and the guide rod 13 are coupled while the positions of the first support rod 11, the second support rod 12 and the guide rod 13 may be changed.
6. The chair of claim 3, wherein the shock absorber 15 comprises:
- an outer housing 155 that is disposed between the first support rod 11 and the rear portion of the seat plate 2;
- an inner cylinder 160 that is disposed in the outer housing 155;
- a piston rod 16 whose piston head 16a is movable in the inner cylinder 160 and end portion opposite to a portion connected to the piston head 16a is connected to the seat plate 2;
- a spring 158 that is provided in the inner cylinder 160 and exerts an elastic force to push the piston head 16a,
- first orifices 151 that are formed in a lower end portion of the inner cylinder 160;
- second orifices 152 that are formed between the outer housing 155 and the inner cylinder 160;
- third orifices 153 that are formed in an upper end portion of the inner cylinder 160; and
- a working fluid 157 that fills in an inner space of the outer housing 155,
- wherein when a user sits on the seat plate 2, the shock absorber 15 slowly compresses and when the user rises from the seat plate 2, the shock absorber 15 slowly extends due to an elastic force of the spring 158.
7. The chair of claim 3, wherein the shock absorber 15 comprises:
- an outer housing 155 that is disposed between the first support rod 11 and the rear portion of the seat plate 2;
- an inner cylinder 160 that is disposed in the outer housing 155;
- a piston rod 16 whose piston head 16a is movable in the inner cylinder 160 and end portion opposite to a portion connected to the head is connected to the seat plate 2;
- a spring fixing protrusion 158b that is formed on the piston rod 16;
- an outer spring 158a that is disposed between an upper cover 155b of the outer housing 155 and the spring fixing protrusion 158b to surround the piston rod 16;
- first orifices 151 that are formed in a lower end portion of the inner cylinder 160;
- second orifices 152 that are formed between the outer housing 155 and the inner cylinder 160;
- third orifices 153 that are formed in an upper end portion of the inner cylinder 160; and
- a working fluid 157 that fills in an inner space of the outer housing 155,
- wherein when a user sits on the seat plate 2, the shock absorber 15 slowly compresses and when the user rises from the seat plate 2, the shock absorber 15 extends due to an elastic force of the outer spring 158a.
8. The chair of claim 6, wherein an adjustment block 171 is provided adjacent to at least one of the first through third orifices 151, 152, and 153 of the shock absorber 15, and an adjustment knob 170 that may change a position of the adjustment block 171 is provided on the outer housing 155,
- wherein the adjustment block 171 may partially or entirely open or close at least one of the first through third orifices 151, 152, and 153 by manipulating the adjustment knob 170, to thus adjust an operation speed of the extensible support unit 600 or fix the extensible support unit 600 to its current position.
9. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a main seat plate 2a on which a user's hips may be placed;
- an auxiliary seat plate 2b that is disposed in front of the main seat plate 2a and is connected via a connection member 2c to the main seat plate 2a;
- a base that is disposed under the main seat plate 2a and the auxiliary seat plate 2b to contact the ground and supports a structure of the chair;
- an extensible support unit 601 whose upper end portion is fixed to a bottom surface of the main seat plate 2a and lower end portion is fixed to the base 3 and
- an auxiliary seat plate support connection bar 303 whose end is pivotably fixed to the auxiliary seat plate 2b and the other end is pivotably fixed to the extensible support unit 601.
10. The chair of claim 9, wherein the extensible support unit 601 comprises:
- an outer container 300 that fixedly erects from the base 3;
- a shock absorber 310 that is provided in the outer container 300;
- a spindle 200 whose lower end portion is connected to the shock absorber 310 in the outer container 300 and upper end portion is fixed to the bottom surface of the main seat plate 2a; and
- a spring 203 that surrounds the spindle 200,
- wherein the main seat plate 2a and the auxiliary seat plate 2b which are connected to each other are vertically movable;
- wherein when the user sits on the main seat plate 2a and the auxiliary seat plate 2b, the shock absorber 310 slowly compresses and when the user rises from the main seat plate 2a and the auxiliary seat plate 2b, the shock absorber 310 slowly extends due to an elastic force of the spring 203.
11. The chair of claim 9, wherein the extensible support unit 601 comprises:
- an outer container 300 that fixedly erects from the base 3;
- a shock absorber 310 that is provided in the outer container 300;
- a spindle 200 whose lower end portion is connected to the shock absorber 310 in the outer container 300 and upper end portion is fixed to a bottom surface of the main seat plate 2a; and
- a spring that is provided in the shock absorber 310 and exerts an elastic force to extend the shock absorber 310,
- wherein the main seat plate 2a and the auxiliary seat plate 2b which are connected to each other are vertically movable,
- wherein when the user sits on the main seat plate 2a and the auxiliary seat plate 2b, the shock absorber 310 slowly compresses and when the user rises from the main seat plate 2a and the auxiliary seat plate 2b, the shock absorber 15 slowly extends due to an elastic force of the spring.
12. The chair of claim 9, wherein the extensible support unit 601 comprises:
- an outer container 300 that fixedly erects from the base 3;
- a motor cylinder that is provided in the outer container 300; and
- a spindle 200 whose lower end portion is connected to the motor cylinder in the outer container 300 and upper end portion is fixed to a bottom surface of the main seat plate 2a,
- wherein the main seat plate 2a and the auxiliary seat plate 2b which are connected to each other are vertically movable,
- wherein as the motor cylinder compresses or extends, the main seat plate 2a is lowered or raised.
13. The chair of claim 10, wherein the outer container 300 is provided on the base 3 to be inclined at 1 to 10° toward the auxiliary seat plate 2b with respect to a direction perpendicular to the base 3.
14. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a seat plate 2 on which a user's hips may be placed;
- an extensible support unit 602 whose upper end is pivotably fixed to a rear portion of the seat plate 2 and lower end portion contacts the ground under a front portion of the seat plate 2; and
- a second support rod 12 whose upper end portion is pivotably fixed to the front portion of the seat plate 2 and lower end portion contacts the ground under the rear portion of the seat plate 2,
- wherein the extensible support unit 602 comprises a first support rod 11 whose lower end portion contacts the ground, and a shock absorber 15 whose lower end portion is connected to the first support rod 11 and upper end portion is connected to the rear portion of the seat plate 2,
- wherein the first support rod 11 and the second support rod 12 which cross each other in an X shape are pivotably coupled to each other by using a rod coupling pin 400.
15. The chair of claim 14, wherein the lower end portion of the second support rod 12 is fixed in position by being coupled to the base 3, and the lower end portion of the first support rod 11 has a wheel 31a provided thereon such that when the user sits on the chair, the lower end portion of the first support rod 11 moves forward and when the user rises from the chair, the lower end portion of the first support rod 11 moves backward.
16. The chair of claim 14, wherein the lower end portion of the first support rod 11 is fixed in position by being coupled to the base 3, and the lower end portion of the second support rod 12 has a wheel 32b provided thereon such that when the user sits on the chair, the lower end portion of the second support rod 12 moves forward and when the user rises from the chair, the lower end portion of the second support rod 12 moves backward.
17. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a seat plate 2 on which a user's hips may be placed;
- a first support rod 401 whose upper end portion faces a rear portion of the seat plate 2 and lower end portion contacts the ground under a front portion of the seat plate 2;
- a second support rod 402 whose upper end portion is pivotably fixed to the front portion of the seat plate 2 and lower end portion contacts the ground under the rear portion of the seat plate 2;
- a connection rod 650 whose lower end is pivotably coupled to the upper end portion of the first support rod 401 by using a coupling pin 651 and upper end is pivotably coupled to a force application point 23 between a front end portion and a rear end portion of the seat plate 2, to couple the seat plate 2 and the second support rod 402;
- a rod coupling pin 400 that couples the first support rod 401 to the second support rod 402 at an intersection point; and
- a shock absorber 450 that is provided between the force application point 23 and the rod coupling pin 400.
18. The chair of claim 17, further comprising a second shock absorber 460 that is provided between the upper end portion of the first support rod 401 and the lower end portion of the second support rod 402.
19. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a seat plate 2 on which a user's hips may be placed;
- a basic support rod 500 whose upper end portion is pivotably fixed to a front portion of the seat plate 2 and lower end portion is pivotably fixed to the ground under a rear portion of the seat plate 2;
- a first shock absorber 510 whose upper end portion is pivotably fixed to a portion of the basic support rod 500 in a longitudinal direction of the basic support rod 500 and lower end portion is pivotably fixed to the ground under a front portion of the seat plate; and
- a second shock absorber 520 whose upper end portion is pivotably fixed to the rear portion of the seat plate 2 and lower end portion is pivotably fixed to a portion of the basic support rod 500 in the longitudinal direction of the basic support rod 500.
20. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a seat plate 2 on which a user's hips may be placed;
- an extensible support unit 602 whose upper end portion is pivotably fixed to a rear portion of the seat plate 2 and lower end portion contacts the ground under a front portion of the seat plate 2; and
- a second support rod 12 whose upper end portion is pivotably fixed to the front portion of the seat plate 2 and lower end portion contacts the ground under the rear portion of the seat plate 2,
- wherein the extensible support unit 602 comprises a first support rod 11 whose lower end portion contacts the ground, and a motor cylinder whose lower end portion is connected to the first support rod 11 and upper end portion is connected to the rear portion of the seat plate 2,
- wherein the first support rod 11 and the second support rod 12 which cross each other in an X shape are pivotably coupled to each other by using a rod coupling pin 400.
21. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a seat plate 2 on which a user's hips may be placed;
- a first support rod 401 whose upper end portion faces a rear portion of the seat plate 2 and lower end portion contacts the ground under a front portion of the seat plate 2;
- a second support rod 402 whose upper end portion is pivotably fixed to the front portion of the seat plate 2 and lower end portion contacts the ground under the rear portion of the seat plate 2;
- a connection rod 650 whose lower end is pivotably coupled to the upper end portion of the first support rod 401 by using a coupling pin 651 and upper end is pivotably coupled at a force application point 23 between a front end portion and a rear end portion of the seat plate 2, thereby connecting the second support rod 402 to the seat plate 2;
- a rod coupling pin 400 that couples the first support rod 401 to the second support rod 402 at an intersection point; and
- a motor cylinder that is provided between the force application point 23 and the rod coupling pin 400.
22. The chair of claim 21, further comprising a second motor cylinder that is provided between the upper end portion of the first support rod 401 and the lower end portion of the second support rod 402.
23. A chair for easy-sitting and easy-rising motions, the chair comprising:
- a seat plate 2 on which a user's hips may be placed;
- a basic support rod 500 whose upper end portion is pivotably fixed to a front portion of the seat plate 2 and lower end portion is pivotably fixed to the ground under a rear portion of the seat plate 2;
- a motor cylinder whose upper end portion is pivotably fixed to a portion of the basic support rod 500 in a longitudinal direction of the basic support rod 500 and lower end portion is pivotably fixed to the ground under the front portion of the seat plate 2; and
- a motor cylinder whose upper end portion is pivotably fixed to the rear portion of the seat plate 2 and lower end portion is pivotably fixed to a portion of the basic support rod 500 in the longitudinal direction of the basic support rod 500.
Type: Application
Filed: May 31, 2011
Publication Date: Mar 21, 2013
Applicants: FINEM.CO., LTD. (Seoul), (Seoul)
Inventors: Won Seuk Park (Seoul), Hyung Seok Park (Seoul)
Application Number: 13/701,459